symmetry love

# symmetry

## Definitions

### from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The correspondence of the form and arrangement of elements or parts on opposite sides of a dividing line or plane or about a center or an axis.
• noun A relationship in which there is correspondence or similarity between entities or parts.
• noun Beauty as a result of pleasing proportions or harmonious arrangement.
• noun Physics Invariance under transformation. For example, a system that is invariant under rotation has rotational symmetry.

### from The Century Dictionary.

• noun In moderu crystallography crystals are not only referred to certain systems (see crystallography) according to the relative lengths and inclinations of their assumed axes, but they are also further divided into classes, or groups, according to the kind and number of symmetry elements they possess.
• noun In Radial series, the Major Symmetry is built up by radial divisions of the first kind, producing segments whose adjacent parts are homologous, and related to each other as images.
• noun Proportionality; commensurability; the due proportion of parts; especially, the proper commensurability of the parts of the human body, according to a canon; hence, congruity; beauty of form.
• noun The metrical correspondence of parts with reference to a median plane, each element of geometrical form having its counterpart upon the opposite side of that plane, in the same continued perpendicular to the plane, and at the same distance from it, so that the two halves are geometrically related as a body and its image in a plane mirror: so, usually, in geometry.
• noun The composition of like and equably distributed parts to form a unitary whole; a balance between different parts, otherwise than in reference to a medial plane: but the mere repetition of parts, as in a pattern, is not properly called symmetry.
• noun Consistency; congruity; keeping; proper subordination of a part to the whole.
• noun In biology: In botany, specifically, agreement in number of parts among the cycles of organs which compose a flower. See symmetrical, 3.
• noun In zoölogy and anatomy, the symmetrical disposition or reversed repetition of parts around an axis or on opposite sides of any plane of the body.

### from the GNU version of the Collaborative International Dictionary of English.

• noun A due proportion of the several parts of a body to each other; adaptation of the form or dimensions of the several parts of a thing to each other; the union and conformity of the members of a work to the whole.
• noun (Biol.) The law of likeness; similarity of structure; regularity in form and arrangement; orderly and similar distribution of parts, such that an animal may be divided into parts which are structurally symmetrical.
• noun Equality in the number of parts of the successive circles in a flower.
• noun Likeness in the form and size of floral organs of the same kind; regularity.
• noun (Geom.) See under Axis.
• noun that disposition of parts in which only the opposite sides are equal to each other.

• noun Exact correspondence on either side of a dividing line, plane, center or axis.
• noun uncountable The satisfying arrangement of a balanced distribution of the elements of a whole.

• noun (physics) the property of being isotropic; having the same value when measured in different directions
• noun (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane
• noun balance among the parts of something

## Etymologies

### from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin symmetria, from Greek summetriā, from summetros, of like measure : sun-, syn- + metron, measure; see mē- in Indo-European roots.]

From Latin symmetria, from Ancient Greek συμμετρία (symmetria), from σύμμετρος (summetros, "symmetrical"), from σύν (sun, "with") + μέτρον (metron, "measure").

## Examples

• "Faith" in symmetry is not faith when abstract ideas like symmetry lead to explanations of empirical data, lead to new discoveries.

Bukiet on Brooklyn Books Hal Duncan 2009

• "Faith" in symmetry is not faith when abstract ideas like symmetry lead to explanations of empirical data, lead to new discoveries.

Bukiet on Brooklyn Books Hal Duncan 2009

• It is true that the dic - tionary meaning of the term symmetry has shifted since antiquity, but none of the original connotations has become obsolete, certainly not entirely so.

SYMMETRY AND ASYMMETRY SALOMON BOCHNER 1968

• When translating from the Greek for the general reader it is best to follow Pliny's (and Vitruvius ') exam - ple and let the term symmetry stand as it does, rather than render it by a locution that, for a scholar, might perhaps better fit the context.

SYMMETRY AND ASYMMETRY SALOMON BOCHNER 1968

• Others, again, have applied the term symmetry to the number of the parts of the flower, reserving the terms "regularity" or

• Ceramics and Pottery Which principle of art is described by the term symmetry?

• Ceramics and Pottery Which principle of art is described by the term symmetry?

• If by “as intelligent” we mean something else entirely, then the lack of symmetry is disturbing.

• This symmetry is vitally important to the other two regulatory schemes because the usual false advertising scenario involves someone challenging nice things that the advertiser says about itself.

Archive 2009-04-01 Rebecca Tushnet 2009

• So she rents Edie's old house, which has a certain symmetry to it.